Yiu,For the DNS recommendation. This is needed not only for optimization. The B4 element only receives the v6 address of the DNS servers in dhcpv6 message, it doesn’t have IPv4 address of any dns server. If the B4 element doesn’t advertise itself (e.g. 192.168.1.1) as a dns server in the dhcp message to its managed hosts, a v4-only host will not learn any dns server in dhcp. Yes, the host could be potentially set the dns server manually, but this may cause many inconvenience to the ipv4-only host. Ah, I missed that. Do you have any suggestion to pass the v4 address to the B4 element so that the B4 element can pass it to the host in dhcp message? I guess this is a more general question than just about DNS. If there are any services in the network, how do we reach them and is there a need for a separate proxy function for each? That being said, I'm not sure how common passing of information from the service provider DHCP to customer DHCP is. I know it is frequently done for DNS, but for other information? Ralph? (The obvious answer for passing information would be to use DHCP through the tunnel, but I don't know if there are drawbacks.) Jari |
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